Malicious PDF — malware analysis report

Static analysis result for SHA-256 43bbc7ef546ee6cd…

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 22:26:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5370558d8dee62cbef6b2bdf57439106 SHA-1: ed7b66480a5a9649c33133432b929ba97bfc2c2b SHA-256: 43bbc7ef546ee6cd19a1c109a5badf828d485eddb66752ac97502b529bc48060
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, specifically promoting 'free generators' for games like Roblox and Coin Master. The ML classifier strongly flagged this PDF as malicious, and heuristic rules identified it as a redirector lure. While no scripts were directly extracted, the embedded URLs suggest a phishing or scam attempt designed to lead users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/free-roblox-com-game-hack In PDF document text
    • http://depilhome-fr.fr/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://depilhome-fr.fr/images/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/wurst-client_GM479516143.pdfIn PDF document text
    • http://depilhome-fr.fr/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000480d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x480D 25496 bytes
SHA-256: 822291765c63c9bc2d73d53e353613fe88b70a838ab8d192b3de5ecbcaa4e2ed
font_01_sfnt_off00008345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8345 18208 bytes
SHA-256: a8b78c346849e492d79c6e108c6b39d90d98748c1a8fa70f2ffbc01f5a97eafd

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